RTH 1923 C. melanotus 25 June Darnes, Alaska Throat - but the bird was in semi- posture + the bill was wide open. This may have been a version of the jabber Grunn in ground - but it more closely resembled The call given as a prelude to ground courtship - or courtship. Ground-located aerial contacts between BB were common today. Both the upright posture (with tail depressed fanned + the m side-warp (bathing opening + the sudden dashes) & the hundred posture (with both features suppressed, head forward & pulled into the body) were involved in ground encounters. Two birds were seen to fly - flutter into air + fly side by side for several feet. In doing this - they kept their tail at in a lowered position & partly fanned - thus giving a low-in-ir-obdane appearance in flight. - The wings are fluttered - rapidly - + noisily + the bird rose more than 10' above the ground. This is probably an indication of aggressive action carried into flight. Only one ground courtship sequence noted today. In this case, Negat